I love History. And everyone says you can learn from History. If that were really true we wouldn’t keep making the same stupid mistakes over and over.
But there is one overwhelming truism that we can learn from History. Most of the evil that has existed on our little planet has been done in the name of some deity. And if you want to look at a truly evil person, look no further than someone who thinks he or she has their deity on their side or he/she is doing their deity’s bidding. Generally against someone else’s interpretation of God.